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introduction：With the rapid development of power electronic technology and new semiconductor devices ,Ac speed regulation technology has been continuously improved and improved ,Gradually improve the frequency converter with its good output waveform、The excellent performance/price ratio is widely used in AC machines。 Such as: A large electric motor used in rolling steel in a steel mill、Small roller table motor、Traction motors for railway and urban rail transit、Elevator motor、Lifting motor for container lifting equipment、Motors for pumps and fans、compressor、Electric motors for household appliances have successively used AC variable frequency speed regulating motors ,Good results have been obtained。The use of AC variable frequency speed regulating motor has obvious advantages over DC speed regulating motor： ( 1)Easy speed regulation ,And energy saving。 ( 2)Ac motor structure is simple、Small size、Low inertia、Low cost、Easy maintenance、durable。 ( 3)Can expand capacity ,Achieve high speed and high voltage operation。 ( 4)Can ach
2018-04-13 Reading quantity 363
introduction：Working principle of double acting cylinder The switching action of the double acting cylinder is driven by the air source；Vent open，Vent close，Hold the air in place；Double acting cylinder A cylindrical metal part that guides the piston through a straight reciprocating motion in the cylinder。Air in the engine cylinder expands to convert thermal energy into mechanical energy；The gas in the compressor cylinder is compressed by the piston and the pressure is increased。I believe that many people do not know the working principle of the double acting cylinder, in fact, it is similar to the working principle of the cylinder，The following Feng Ye Xiaobian will take you to see the picture to understand。
2018-04-12 Reading quantity 470
introduction： By frequency converterThe operation of driving synchronous motor is accomplished by starting with excitation。 Working principle： Before the frequency converter outputs voltage to the stator of synchronous motor，Firstly, a certain exciting current is passed through the exciting device to the exciting winding of the synchronous motor，The inverter then outputs the appropriate voltage to the armature winding of the synchronous motor，Starting motor。 The Angle between the armature voltage vector of the synchronous motor and the magnetic pole position of the rotor must be within a certain range，If its not within that range，Synchronous motor may cause the system to be out of step。Before the motor starts，The Angle is arbitrary，So you have to control the Angle to this range，The motor can gradually enter a stable synchronous operation state。Through this phenomenon，We can determine that the biggest obstacle when the frequency converter is applied to the synchronous motor is the start synchronizing stage。
2018-04-11 Reading quantity 457
introduction：Servo motorAllows control of speed，The position accuracy is very accurate，The voltage signal can be converted into torque and speed to drive the control object。Servo motor rotor speed is controlled by input signal，And can react quickly，In the automatic control system，Used as an executive element，And has a small electromechanical time constant、High linearity、Starting voltage and other characteristics，The received electrical signal can be converted into angular displacement or angular speed output on the motor shaft。Divided into DC and AC servo motor two categories，Its main characteristics are，When the signal voltage is zero, there is no rotation，The speed decreases at a constant rate as the torque increases。 Working principle： 1、Servo system（servo mechanism）Is to make the objects position、orientation、An output controlled quantity such as state can follow an input target（Or value）The automatic control system of arbitrary changes。Servo mainly relies on pulse positioning，Basically you can think of it this way，Se
2018-04-11 Reading quantity 354
introduction：Variable frequency motorIt means under standard environmental conditions，In order to100%Rated load in10%~100%Continuous operation within the rated speed range，A motor whose temperature rise does not exceed the allowable value of the motors calibration。 With the rapid development of power electronic technology and new semiconductor devices ,Ac speed regulation technology has been continuously improved and improved ,Gradually improve the frequency converter with its good output waveform、The excellent performance/price ratio is widely used in AC machines。 Such as: A large electric motor used in rolling steel in a steel mill、Small roller table motor、Traction motors for railway and urban rail transit、Elevator motor、Lifting motor for container lifting equipment、Motors for pumps and fans、compressor、Electric motors for household appliances have successively used AC variable frequency speed regulating motors ,Good results have been obtained。The use of AC variable frequency speed regulating motor has obvious advan
2018-04-10 Reading quantity 502
introduction：The difference between solid state relays and ordinary relays There are two types of relays. One is an electromagnetic relay（General relay）Another is a solid-state relay，There are many different differences between the two，Below, Feng Yes Xiaobian will take you to understand the difference between solid state relays and ordinary relays： 1、Structural distinction：Electromagnetic relays work by the suction between the magnet core and the armature generated by the circuit in the input circuit；Solid state relays use electronic components to perform their functions without mechanical moving components，Inputs and outputs are isolated。
2018-04-10 Reading quantity 440
introduction：Schneider inverterBe fully known as“Schneider AC variable frequency governor”，It was developed by the French Schneider Electric Group、Manufacturing and sales of well-known inverter brands。It is mainly used to control and adjust the speed of three-phase AC induction motor，With its stable performance、Rich combination features、Good dynamic characteristics、Super overload capability and unparalleled flexibility，It occupies an important position in the inverter market。Widely used in various industrial fields，Especially in elevators.、spin、Machine tool、Industries such as lifting and shipping and ports。 Major fault： 1、overcurrent： Overcurrent faults can be classified as acceleration、retard、Constant velocity overcurrent。It may be because the acceleration and deceleration time of the inverter is too short、Sudden change of load、Uneven load distribution，Output short circuit and other causes。At this time, the acceleration and deceleration time can be extended、Sudden load reduction、Plus energy consumption brake element
2018-04-09 Reading quantity 475
introduction：Electric machineTo achieve positive and negative control，The phase sequence of its power supply can be adjusted to any two relative（We call it commutation），usuallyVPhase invariance，willUGet along with sb.WRelative key，In order to ensure that the phase sequence of the motor can be reliably switched when the two contactors operate，When wiring, the upper connection of the contactor should be consistent，Phase modulation at the lower mouth of the contactor。Due to the switching of the two phase sequences，Therefore, two must be ensuredKMThe coils cannot be charged at the same time，Otherwise, serious interphase short-circuit failure will occur，Therefore, interlocking is necessary。
2018-04-09 Reading quantity 444
introduction：What is the price of temperature relay Temperature relay is also called temperature switch,It is used to give a control signal when the temperature of the oil at the measuring point reaches the set value。The product is a contact induction sealed temperature relay，Have small size、Light weight、High temperature control precision，Extremely versatile。Due to the variable price of spare parts in the automation industry, the temperature relay price is not given below，If you want to know the price of temperature relay you can visit our website home page Fengye Mall。
2018-04-09 Reading quantity 315
introduction：Dc motor（direct current machine）It is able to convert direct current energy into mechanical energy（Direct current motor）Or convert mechanical energy into direct current energy（Dc generator）Rotary motor。It is a motor that can convert direct current energy and mechanical energy into each other。It is a DC motor when it is operated as a motor，Convert electrical energy into mechanical energy；It is a DC generator when operating as a generator，Convert mechanical energy into electrical energy。 Constituent structure： The structure of the DC motor should be composed of two parts: stator and rotor。The stationary part of a DC motor is called the stator，The main function of the stator is to generate a magnetic field，Following stand、Main pole、Commutating pole、End cover、Bearing and brush device, etc。The part that turns during operation is called the rotor，Its main function is to produce electromagnetic torque and induced electromotive force，It is the hub of DC motor for energy conversion，So its often called an armature
2018-04-06 Reading quantity 482
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